2.80: Pie menus and Quick Favorite menu - conflict?
Pie Menus are enabled by default in blender 2.8, so you no longer need to enable the addon.  So now the q key will work as quick favorites.  

But how do you get the view pie menu that the addon previously provided with key q?  Well, that's now the backtick key (`).  You can see all the pie menu key mappings under the user_preferences->keymap and filtering on pie: